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Answered 2021-03-05 23:45:00

A sphere does not have peremiter. Peremiter is the total length of all the edges, and a sphere does not have edges.

It is not that 3D shapes cannot have perimeter, rather shapes without edges cannot.

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Answered 2012-11-22 04:44:13

In 3-dimensional geometry, the term "perimeter of a sphere" is not normally used.

The closest thing would be the equatorial circumference. Think of cutting a ball (with radius r) in half, and looking at the outline of the cut surface. It is a circle with radius r, and the usual circle formula applies:

C = 2(pi)r

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